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首页> 外文期刊>Journal of Hazardous Materials >Abundance and characteristics of microplastics in soils with different agricultural practices: Importance of sources with internal origin and environmental fate
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Abundance and characteristics of microplastics in soils with different agricultural practices: Importance of sources with internal origin and environmental fate

机译：不同农业实践土壤中微型塑料的丰富和特征：内部起源与环境命运的重要性

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摘要

Despite intensive use of plastics in agriculture, little is known about the occurrence of microplastics (MPs) in agro-environment. To identify the effect of internal sources and environmental fate on MP appearance in farmland, we examined four soil types with different agricultural practices representing either direct application of polyethylene (PE) film-the inside (GS-in) and outside (GS-out) soils of greenhouse and mulch-film use soils (MS)-or rare use of plastics (rice-paddy soils; RS). MP abundance was 10-7630 items kg(-1), with the order of GS in, GS-out, RS, and MS. Besides the highest MP abundance, rare PE-sheet (4% of MPs) and increased MP abundance with sizes decreasing were unique for GS-in, implying the presence of internal sources other than PEfilm and continued MP accumulation. Contrarily, in other outside soils high PE-sheet appearance (10-31%) indicated substantial input via fragmentation of applied PE-film (for GS-out and MS) or via surface-runoff (for RS) while drastic decline of small-sized MPs in order of MS RS GS-out than expected from steady-state fragmentation implied significant removal of MPs by surface runoff and/or infiltration. Our results suggest the importance of internal sources and environmental fate as significant factors affecting the occurrence of MPs in agricultural soils.
机译：尽管在农业中密集使用塑料，但对于农业环境中的微型塑料（MPS）的发生毫无疑问。为了确定内部来源和环境命运对耕地MP外观的影响，我们检查了四种土壤类型，具有不同的农业实践，该土壤类型代表聚乙烯（PE）薄膜 - 内部（GS-OUT）的直接施用温室和覆盖膜的土壤使用土壤（MS） - 罕见使用塑料（稻田土壤; rs）。 MP丰度为10-7630项KG（-1），其中GS中的GS，GS-OUT，RS和MS。除了最高的MP丰度，罕见的PE-纸张（4％的MPS）和随着尺寸减小的尺寸增加的MP丰度对于GS-IN是独特的，这意味着存在于PEFILM之外的内部来源和持续的MP积累。相反，在其他外部土壤外部的高层纸张外观（10-31％）通过施加的PE膜（用于GS-OUT和MS）或通过表面径流（用于RS）的碎片显示大量输入，同时急剧下降 - MS的大小MPS为MS> RS> GS-OUT比预期从稳态碎片暗示通过表面径流和/或渗透来显着地去除MP。我们的成果表明内部来源和环境命运的重要性是影响农业土壤中MPS发生的重要因素。

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  • 来源
    《Journal of Hazardous Materials》 |2021年第3期|123997.1-123997.11|共11页
  • 作者

    Kim Seung-Kyu; Kim Ji-Su; Lee Hwang; Lee Hee-Jee;

  • 作者单位

    Incheon Natl Univ Coll Nat Sci Dept Marine Sci Acad Ro 119 Incheon 22012 South Korea|Incheon Natl Univ Res Inst Basic Sci Acad Ro 119 Incheon 22012 South Korea;

    Incheon Natl Univ Coll Nat Sci Dept Marine Sci Acad Ro 119 Incheon 22012 South Korea;

    Incheon Natl Univ Res Inst Basic Sci Acad Ro 119 Incheon 22012 South Korea;

    Incheon Natl Univ Coll Nat Sci Dept Marine Sci Acad Ro 119 Incheon 22012 South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Agricultural soils; Mulching; Greenhouse; Size distribution; Polyethylene film;

    机译：农业土壤;覆盖;温室;尺寸分布;聚乙烯薄膜;

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